Cylinder drain-cock.



' Nn. 653,147. Patenteululy 3, i900.

W. F. MSES.

CYLINDER DRAIN COCK.

` A (Application led Bar. 29, 19Q0.) (No Model.)

V me/wko@ QR) bmw W I M663' www VL .4 l WL blfozwm i Irren STATES WILLIAM n. Moses, OF HUNTINGTON, INDIANA.

' 'CYLINDER DRAIN-COCK.

SPECIFICATION forming part of Letters Patent N o. 653,147, dated July 3, 1900. Application led March 29, 1900. Serial No. 10,669. (No model.)

' To @ZZ whom t Hefty concern:

Be it known that I, WILLIAM F. Mosns, a citizen of the United States, residing at Huntington, in the county of Huntington and State of Indiana, have invent-ed new and useful Improvements in CylinderDrain-Cocks,of which the following is a specification.

My invention relates to drain cocks for steam-pressure cylinders; and the objects of the saine are to provide a device for this purpose which shall be simple in construction, reliable and efficient in use, of few parts, which can be readily detached for repairs and which may be applied to any steam-cylinder, and which shall be capable of ready Operation for relieving and draining said cylinder.

I attain these objects by means of the con-` struction shown in the accompanying drawings, Which form a part of this specitication, and in Which- Figure lis a side View of a relief-valve made in accordance with my invention. Fig. 2 is a central longitudinal section through the same. Fig. 3 is a detail perspective of one of the valves. Fig. 4 is a similar view of one of the detachable exit-nipples. Fig: 5 is a vertical section on line 5 5, Fig. 2.

Like numerals and letters of reference designate like parts Wherever they occur in the different views.

In said drawings the numeral 1 designates a steam-cylinder of any Well-known or preferred form, and 2 is a drain-cock made in accordance with my invention applied to said cylinder. The valve-coupling comprises the two sections 3 3", each having a valve-seat 4, of like construction, and each provided with a valve 5,01:` substantially-i'dentical structure. The two sections 3 3a are connected centrally by a threaded joint 6, and between the two valve-seats 4 a valve-chamber 7 is provided. Connected to the section 3 is a pipe 8, which leads to the boiler of the engine and is provided with a steam-cock b at a convenient point for operation by the engineer. The pipe 8 passes through a threaded aperture 9 in section 3 of the valve-coupling and is connected with the valve-chamber 7.

The valve-seats 4 are formed upon partitions 10, which are centrally apertured at 11 and provided with valve-seats l2 upon their outer surfaces to accommodate the valves 13.

The valves 5 and 13 are of different areas, those designated 5 being of greaterarear than those indicated by the numeral 13. The valve 5 is formed of a disk having a central threaded aperture 14, and the valve 13 consists of the threaded stem l5, having flattened sides a, fitting the aperture 14, and the valve-head 13 having a slot 16 in its outer surface for application of a screw-driver for separating the two valves for cleaning purposes or renewal. The stem 15 passes through the aperture 11 and slides therein to Open or close the valves, as will be presently described. The curved nipples 17 are provided each with a threaded end, which fits an opening 18, communicating with the aperture l1. Connected Vto the outer ends of the sections 3 3a are the thread ed caps 19, having threaded nipples 20, to which the inlet-pipes 21 are connected, the opposite ends of said inlet-pipes communieating with the steam-cylinder.

The operation of my drain-cock is as followsz'Under normal conditions steam is admitted from the cylinder 1 through the inletpipes 21, and the pressure is exerted against the valves 13 to hold them tightly to their seats. When the cock b is open, the pressure against valves 5 is suficient to overcome the pressure upon valves 13, owing to the greater area of said valves 5, and as a result the valves 13 are opened and the valves 5 closed. The opening of valves 13 permits steam to escape through the nipples 17 until the cock h is closed. 'lhe nipples may be turned in any direction desired in the threaded aperture in which they are seated.

It Will be Obvious from the foregoing that my device is simple in construction, reliable and efioient in use, and that the valves or other parts of the structure may be readily removed for cleaning, repairing, or renewal.

Having thus fully described my invention, what l claim is l. In a drain-cock, a coupling consisting of two sections, a valve-chamber therein,fpartitions at the ends of said chamber, an aperture extending through each partition, and a valve-seat in each end of each aperture, dupleX valves connected by a stem passing through the apertures in'the partitions, said valves being of dierent areas, connections at the ends of said sections to the steam-cyl- IOO inder, and a connection provided with a cock for reversingithe valves, substantially as described.

2. In a drain-cock, a central coupling.)r comprising two sections, a valve-chamber therein having apertured end partitions, duplex y valves seated in said apertures, said valves each consisting of a headed bolt having a flattened stein and a valve-head connected to Io said stem by screw-threads, and connections to the steam-cylinder, one of said connections having a stop-cock for reversing the valves, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- 15 

